In January, Jordan passed a law to control research and therapy using human stem cells derived from embryos — the first such regulation in the Arab and Islamic region. Rana Dajani, who is associate professor of molecular cell biology at the Hashemite University in Zarqa, Jordan, and was part of the legislative initiative, writes Jordan has become the kingdom’s status as a health-care hub that draws patients from abroad and argues that this may be a model to other countries in the region.